<template>
  <div class="todo-header">
    <input type="text" placeholder="请输入你的任务名称，按回车键确认"
    v-model.trim="todoName"
    @keyup.enter="handleKeyup"
    />
  </div>
</template>

<script>
export default {
   name: 'todo-header',
   props:{
    addTodo:{
      type:Function,
      required:true,
    },
   },
   data() {
       return {
        todoName:'',
       };
   },
   methods:{
    handleKeyup(){
      //判断数据是否为空,为空不添加
      if(!this.todoName){
        return;
      }
      //添加数据
      this.addTodo(this.todoName);
      //将输入的内容清空
      this.todoName='';
    },
   },
  components: {}
}
</script>

<style>

.todo-header input {
  width: 560px;
  height: 28px;
  font-size: 14px;
  border: 1px solid #ccc;
  border-radius: 4px;
  padding: 4px 7px;
}

.todo-header input:focus {
  outline: none;
  border-color: rgba(82, 168, 236, 0.8);
  box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075), 0 0 8px rgba(82, 168, 236, 0.6);
}
</style>
